replication

I have a few questions on Drupal. i am evaluating it for my company and I keep getting stuck on 3 things.

1. How does drupal replicate content across multiple datacenters? If I have my authoring server in one location, how does the content and metadata stay in sync?

2. I need to use a single sign on solution. How would this work if none of the webservers are shared?

3. If I have content that is the same, can I share it between sites?

Thanks for your time.

Chris

I am planning to starting using multisite on my server and I had a quick question for the group. I have over 200 modules enabled on my exiting site, as well as various content types, etc. I will need almost all of this functionality for my new site so I am thinking of replicating my existing db into a newly named db using phpMyAdmin. Once it is running, I was thinking I could simply delete the old content (users, added content, etc) using Views Bulk Operations.

Hi,

I'm an architect working on a project to rebuild our current consumer site, possibly using Drupal, and am new to Drupal and learning as much as I can as fast as I can. We currently serve all users to our site out of a single colocation (colo), but in the near future are planning to add additional colos in other geographic locations and serve the site concurrently from them all, with users being routed to the nearest colo.